Rolf Harris painting on the wall at the hospital. Picture: Adrian Judd for EDP

A spokesman has confirmed the painting, which was given to the hospital by the Australian artist in 1984, was taken down when the case against the former TV star became public.

Untitled by Rolf Harris is painted in his distinctive style and shows a collection of animals and individuals.

It formed part of the hospital’s collection of hundreds of artworks and was hanging in one of its main walkways.

Harris’s reputation was left in tatters yesterday, as police considered fresh allegations against him - and there were calls for tributes and honours to the disgraced star to be removed.

After the 84-year-old’s unanimous conviction of 12 sex charges involving four women - most while they were under age - police said they will look at fresh allegations that were not part of his trial at Southwark Crown Court.

Dozens more alleged victims came forward during the trial, including several in Australia, and Scotland Yard has been in touch with their counterparts in the Australian police. It is not yet clear whether they are pursuing any investigation in Harris’s home country.

Richard Scorer, abuse lawyer for Slater & Gordon who represent 176 victims of Jimmy Savile, said they had been contacted by “up to a dozen people” with allegations about Harris and were considering them carefully.

He said: “We back an over-arching inquiry into child abuse once those reports which are still outstanding are completed.

“What we have discovered in the wake of the Jimmy Savile scandal is just how deep child abuse in institutions ran and how some people were seemingly allowed to continue their sickening crimes unchallenged.

“It is therefore vital we do everything possible now to learn from the mistakes of the past and take this opportunity to toughen the laws around the protection of children and vulnerable adults in institutions.”

Harris faces jail when he is sentenced on Friday for the offences, and his reputation was in ruins today following his conviction.

The mayor of Perth in western Australia said the council was considering tearing up a plaque to Harris inlaid in the city’s St Georges Terrace, while there is growing pressure for the disgraced entertainer to be stripped of his honours from the Queen.

Harris has already had his Bafta fellowship, awarded two years ago, removed.

A plaque unveiled by Harris has been taken down at Colchester Zoo.

The plaque was in the zoo’s Spirit of Africa area, which was opened by the artist and musician in April 1998.